<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="../jquery/jquery-3.1.0/jquery-3.1.0.js"></script>
</head>
<body>
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<script>
    var $obj1=$();

    //toArray
    var $obj2=$('div');
    var arr2=$obj2.toArray();

    //get
    var $obj3=$('div');
    var o1=$obj3.get(2);
    var o2=$obj3.get(-1);
    var o3=$obj3.get();
</script>
</body>
</html>